SSSPM J1549-3544

Starbox begin
name= [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=SSSPM%20J1549-3544 SSSPM J1549-3544] Starbox observe
epoch=J2000
constell=Lupus
ra=RA|15|48|40.23 [http://adsabs.harvard.edu/abs/2005ApJ...627L..41F SSSPM J1549-3544 Is Not a White Dwarf] , J. Farihi, P. R. Wood, and B. Stalder, "Astrophysical Journal" 627, #1 (July 2005), pp. L41–L43.]
dec=DEC|-35|44|25.5
appmag_v=14.78 Starbox character | class=sdK5

Starbox astrometry
radial_v=
prop_mo_ra=-591 [http://adsabs.harvard.edu/abs/2004A&A...425..519S The nearest cool white dwarf (d ~4 pc), the coolest M-type subdwarf (sdM9.5), and other high proper motion discoveries] , R.-D. Scholz, I. Lehmann, I. Matute, and H. Zinnecker, "Astronomy and Astrophysics" 425 (Oct. 2004), pp. 519–527.]
prop_mo_dec=-538
gal_lat=+14.5120
gal_lon=338.7810
parallax=
p_error=
absmag_v=9.5
- style="vertical-align: top;"
Distance
~350 Ly
(~100 parsec)Starbox detail
mass=?
radius=?
luminosity=?
temperature=< 4500
metal=?
gravity=?
rotation=?
age=? Starbox catalog
names=SSSPM J1549-3544, 2MASS J15484023-3544254.Starbox reference
Simbad=2MASS%20J15484023-3544254

SSSPM J1549-3544 is a star in the constellation Lupus with high proper motion. It was initially found to have high proper motion in a 2003 survey of images taken by the optical SuperCOSMOS Sky Surveys and by the near-infrared sky surveys 2MASS and DENIS. It was then thought to be a cool white dwarf close to the Sun. However, more detailed spectroscopic observations in 2005 appear to show that it is not a white dwarf, but a high-velocity halo metal-poor subdwarf.

References

* http://www.aanda.org/index.php?option=article&access=standard&Itemid=129&url=/articles/aa/full/2004/38/aa1059/aa1059.html